[github actions] use mshick/add-pr-comment since old comment plugin discontinued

[notandy]

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[github-actions]

Name                                                                         Stmts   Miss  Cover
------------------------------------------------------------------------------------------------
networking_nsxv3/api/rpc.py                                                    231    123    47%
networking_nsxv3/common/config.py                                               16      0   100%
networking_nsxv3/common/constants.py                                            46      0   100%
networking_nsxv3/common/locking.py                                              35     11    69%
networking_nsxv3/common/synchronization.py                                     181     48    73%
networking_nsxv3/db/db.py                                                       94     19    80%
networking_nsxv3/extensions/nsxtoperations.py                                  104    104     0%
networking_nsxv3/plugins/ml2/drivers/nsxv3/agent/agent.py                      163     52    68%
networking_nsxv3/plugins/ml2/drivers/nsxv3/agent/cli.py                        335    227    32%
networking_nsxv3/plugins/ml2/drivers/nsxv3/agent/client_nsx.py                 204     51    75%
networking_nsxv3/plugins/ml2/drivers/nsxv3/agent/constants_nsx.py                6      0   100%
networking_nsxv3/plugins/ml2/drivers/nsxv3/agent/extensions/firewall.py         27      0   100%
networking_nsxv3/plugins/ml2/drivers/nsxv3/agent/mp_to_policy_migration.py     185     56    70%
networking_nsxv3/plugins/ml2/drivers/nsxv3/agent/provider.py                   189     11    94%
networking_nsxv3/plugins/ml2/drivers/nsxv3/agent/provider_nsx_mgmt.py          526     38    93%
networking_nsxv3/plugins/ml2/drivers/nsxv3/agent/provider_nsx_policy.py        668    115    83%
networking_nsxv3/plugins/ml2/drivers/nsxv3/agent/realization.py                297     72    76%
networking_nsxv3/plugins/ml2/drivers/nsxv3/driver.py                           129    129     0%
networking_nsxv3/prometheus/exporter.py                                         21      5    76%
networking_nsxv3/services/logapi/drivers/nsxv3/driver.py                        41      1    98%
networking_nsxv3/services/qos/drivers/nsxv3/qos.py                              34      4    88%
networking_nsxv3/services/trunk/drivers/nsxv3/trunk.py                          71      3    96%
------------------------------------------------------------------------------------------------
TOTAL                                                                         3603   1069    70%